FIELD: chemistry.SUBSTANCE: invention relates to a compound of the general formula (I),where R1 represents a halogen atom, an amino group, a hydroxyl group, a mercapto group, a cyano group, a nitro group, a (C1-C6) alkyl group, a (C2-C6) alkenyl group, a (C2-C6) alkynyl group, a (C3-C6) cycloalkyl group, a (C1-C6) a halogen alkyl group, a (C1-C6) alkoxy group, a (C2-C6) alkenyloxy group, a (C2-C6) alkynyloxy group, a (C3-C6) cycloalkoxy group, a (C1-C6) halogen alkoxy group, a (C1-C6) alkylthio group, a (C2-C6) alkenylthio group, a (C2-C6) alkynylthio group, a (C3-C6) cycloalkylthio group, a (C1-C6) halogen alkylthio group, a (C1-C6) alkylamino group, a (C2-C6) alkenylamino group, a (C2-C6) alkynylamino group, a di (C1-C6) alkylamino group, a di (C2-C6) alkenylamino group, a di (C2-C6) alkynylamino group, a (C1-C6) alkylsulfinyl group, a (C2-C6) alkenylsulfinyl group, a (C2-C6) alkynylsulfinyl group, a (C3-C6) cycloalkylsulfinyl group, a (C1-C6) halogen alkylsulfinyl group, a (C1-C6) alkylsulfonyl group, a (C2-C6) alkenylsulfonyl group, a (C2-C6) alkynylsulfonyl group, a carboxyl group, a (C1-C6) alkylcarbonyl group, a (C1-C6) alkoxycarbonyl group, a (C1-C6) alkylaminocarbonyl group, a di (C1-C6) alkylaminocarbonyl group, a (C1-C6) alkylcarbonyloxy group, a (C1-C6) alkylcarbonylamino group, or a (C1-C6) alkylcarbonyl group, a (C1-C6) alkylamino group R2 is a halogen atom, a hydroxyl group, a mercapto group, a nitro group, a (C1-C6) alkyl group, a (C2-C6) alkenyl group, a (C2-C6) alkynyl group, a (C1- C6) halogen alkyl group, a (C1-C6) alkoxy group, a (C2-C6) alkenyloxy group, a (C2-C6) alkynyloxy group, a (C1-C6) alkylthio group, a (C2-C6) alkenylthio group, a (C2-C6) alkynylthio group, a (C1-C6) alkylamino group, a (C2-C6) alkenylamino group, a (C2-C6) alkynylamino group, a di (C1-C6) alkylamino group, a di (C2-C6) alkenylamino group, a di (C2-C6) alkynylamino group, a (C1-C6) alkylsulfinyl group, a (C2-C6) alkenylsulfinyl group, a (C2-C6) alkynylsulfinyl group, a